| 51st United States Congress | |
|---|---|
50th ← → 52nd | |
 United States Capitol (1906) | |
March 4, 1889 – March 4, 1891 | |
| Members | 88 senators 332 representatives 9 non-voting delegates |
| Senate majority | Republican |
| Senate President | Levi P. Morton (R) |
| House majority | Republican |
| House Speaker | Thomas B. Reed (R) |
| Sessions | |
| Special[a]: March 4, 1889 – April 2, 1889 1st: December 2, 1889 – October 1, 1890 2nd: December 1, 1890 – March 3, 1891 | |
The 51st United States Congress, referred to by some critics as the Billion Dollar Congress, was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from March 4, 1889, to March 4, 1891, during the first two years of Benjamin Harrison's presidency.
The apportionment of seats in this House of Representatives was based on the 1880 United States census.
The Republicans maintained their majority in the Senate, and won the majority in the House. With Benjamin Harrison being sworn in as president on March 4, 1889, this gave the Republicans an overall federal government trifecta for the first time since the 43rd Congress in 1873–1875.
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